My (generally clueless) boss insisted on flinging the blinds in our workspace wide open during the day in our little heatwave recently, expressing wonderment that I kept them closed. The space was roasting beyond belief by 11am. They're currently on holiday in one of the seriously hot countries mentioned. I just hope they'll come back with a reactivated brain cell and understand why I kept the blinds shut. I'm not holding my breath though.
We will probably all have to start living like the Middle East and most of the global south and get things done early in the morning, stay out of the sun in the middle of the day, wear longer looser clothing, cover up with sunscreen, long sleeves, hats and sunglasses, and socialise in the evenings.
And yes, I am sad and furious for the way migrant workers doing the dirty work in those countries are treated and made to work outside in the Middle East and have appalling living conditions. The human race in general has long since ceased to be humane, at least most of the wealthy...